Differential signal line wiring method and pcb board

A method for wiring differential signal lines, comprising steps of:

• providing a rectangle-shaped glass fiber fabric formed of glass fibers which are woven and interlaced with each other and an adhesive filled between the glass fibers;
• determining a wiring direction of differential signal lines, and obtaining a glass fiber bundle number of the glass fiber fabric in the wiring direction, wherein the wiring direction comprises a length direction or a width direction of the glass fiber fabric;
• equally dividing the glass fiber fabric into glass fiber units, the number of which is equal to the glass fiber bundle number, and obtaining a width of each glass fiber unit according to a size of the glass fiber fabric in a direction perpendicular to the wiring direction and the number of the glass fiber units, wherein each of the glass fiber units comprises glass fibers in the wiring direction and the adhesive;
• determining a line distance between the differential signal lines and line widths of the differential signal lines according to the width of each glass fiber unit;
• and
• according to the line distance and the line widths, forming the differential signal lines on a metal layer along the wiring direction to make the differential signal lines meet predetermined requirements, wherein the metal layer is adhered to a surface of the glass fiber fabric.